| 1 | //===--- IncludeSpeller.cpp------------------------------------------------===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #include "clang-include-cleaner/IncludeSpeller.h" |
| 10 | #include "clang-include-cleaner/Types.h" |
| 11 | #include "llvm/ADT/SmallVector.h" |
| 12 | #include "llvm/ADT/StringRef.h" |
| 13 | #include "llvm/Support/ErrorHandling.h" |
| 14 | #include "llvm/Support/Registry.h" |
| 15 | #include <memory> |
| 16 | #include <string> |
| 17 | |
| 18 | LLVM_INSTANTIATE_REGISTRY(clang::include_cleaner::IncludeSpellingStrategy) |
| 19 | |
| 20 | namespace clang::include_cleaner { |
| 21 | namespace { |
| 22 | |
| 23 | // Fallback strategy to default spelling via header search. |
| 24 | class DefaultIncludeSpeller : public IncludeSpeller { |
| 25 | public: |
| 26 | std::string operator()(const Input &Input) const override { |
| 27 | switch (Input.H.kind()) { |
| 28 | case Header::Standard: |
| 29 | return Input.H.standard().name().str(); |
| 30 | case Header::Verbatim: |
| 31 | return Input.H.verbatim().str(); |
| 32 | case Header::Physical: |
| 33 | bool IsAngled = false; |
| 34 | std::string WorkingDir; |
| 35 | if (auto WD = Input.HS.getFileMgr() |
| 36 | .getVirtualFileSystem() |
| 37 | .getCurrentWorkingDirectory()) |
| 38 | WorkingDir = *WD; |
| 39 | std::string FinalSpelling = Input.HS.suggestPathToFileForDiagnostics( |
| 40 | File: Input.H.physical().getName(), WorkingDir, |
| 41 | MainFile: Input.Main->tryGetRealPathName(), IsAngled: &IsAngled); |
| 42 | return IsAngled ? "<"+ FinalSpelling + ">": "\""+ FinalSpelling + "\""; |
| 43 | } |
| 44 | llvm_unreachable("Unknown clang::include_cleaner::Header::Kind enum"); |
| 45 | } |
| 46 | }; |
| 47 | |
| 48 | } // namespace |
| 49 | |
| 50 | std::string spellHeader(const IncludeSpeller::Input &Input) { |
| 51 | static auto *Spellers = [] { |
| 52 | auto *Result = |
| 53 | new llvm::SmallVector<std::unique_ptr<include_cleaner::IncludeSpeller>>; |
| 54 | for (const auto &Strategy : |
| 55 | include_cleaner::IncludeSpellingStrategy::entries()) |
| 56 | Result->push_back(Elt: Strategy.instantiate()); |
| 57 | Result->push_back(Elt: std::make_unique<DefaultIncludeSpeller>()); |
| 58 | return Result; |
| 59 | }(); |
| 60 | |
| 61 | std::string Spelling; |
| 62 | for (const auto &Speller : *Spellers) { |
| 63 | Spelling = (*Speller)(Input); |
| 64 | if (!Spelling.empty()) |
| 65 | break; |
| 66 | } |
| 67 | return Spelling; |
| 68 | } |
| 69 | |
| 70 | } // namespace clang::include_cleaner |
| 71 |